help id this trans/transfercase - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72gmcshorty · 10-03-2011, 07:02 PM

i have this transfercase still attached to the trans. I waant to sell the entire unit but am not sure what year it is from. The PO "thinks" it was a 2004 but not sure. I found some numbers on a sticker on the transfercase if this helps...

60YS NOBB459922 YS48800

Any help is appreciated

72gmcshorty · 10-04-2011, 01:19 PM

found some other numbers:

263 hdgm

1257 5647
11 08 102 G3
272

any help id year?

biggsteve97 · 10-04-2011, 03:58 PM

Your transfercase is the NVG 263 HD GM. Which is the New Venture Gear 263 Heavy Duty transfercase mainly used in 2001-2004 Gm 2500HD and 3500HD trucks. It is similar to the NVG 261 t-case but seems to be a stronger design. As for the transmission if it is the automatic and it was behind the Duramax it will be the Allison 5 speed or if it was behind the gas engine it would be the 4L80E, if it is the manual trans it will be the NV4500. Hope this helps.

72gmcshorty · 10-04-2011, 10:53 PM

helps very much. Was told the trans thats bolted to it was a 4l80e but still no sure of the exact year. But at least now i have better description for selling.

72gmcshorty · 10-05-2011, 11:33 AM

is there a tag on the trans similar to this that would tell me what it is? (trans is covered in mud)...

biggsteve97 · 10-05-2011, 03:07 PM

I do not believe there is a tag however GM used to stamp 4L80 in the bell-housings if it is not a removable bell-housing. If it is a 4L80E it does not look much different on the outside than most of GM's automatics, if it is the Allison the trans is large in comparison to any GM automatic and it will have Allison stamped in the side as well as an external spin on filter next to the pan at what would be the drivers side front corner if the trans was in the truck. These are the only two automatics GM used with the transfercase.

10-03-2011, 07:02 PM	#1
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	help id this trans/transfercase i have this transfercase still attached to the trans. I waant to sell the entire unit but am not sure what year it is from. The PO "thinks" it was a 2004 but not sure. I found some numbers on a sticker on the transfercase if this helps... 60YS NOBB459922 YS48800 Any help is appreciated __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

10-04-2011, 01:19 PM	#2
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Re: help id this trans/transfercase found some other numbers: 263 hdgm 1257 5647 11 08 102 G3 272 any help id year? __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

10-04-2011, 03:58 PM	#3
biggsteve97 Registered User Join Date: Jan 2010 Location: Kansas City, Mo Posts: 284	Re: help id this trans/transfercase Your transfercase is the NVG 263 HD GM. Which is the New Venture Gear 263 Heavy Duty transfercase mainly used in 2001-2004 Gm 2500HD and 3500HD trucks. It is similar to the NVG 261 t-case but seems to be a stronger design. As for the transmission if it is the automatic and it was behind the Duramax it will be the Allison 5 speed or if it was behind the gas engine it would be the 4L80E, if it is the manual trans it will be the NV4500. Hope this helps.

10-04-2011, 10:53 PM	#4
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Re: help id this trans/transfercase helps very much. Was told the trans thats bolted to it was a 4l80e but still no sure of the exact year. But at least now i have better description for selling. __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

10-05-2011, 11:33 AM	#5
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Re: help id this trans/transfercase is there a tag on the trans similar to this that would tell me what it is? (trans is covered in mud)... __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

10-05-2011, 03:07 PM	#6
biggsteve97 Registered User Join Date: Jan 2010 Location: Kansas City, Mo Posts: 284	Re: help id this trans/transfercase I do not believe there is a tag however GM used to stamp 4L80 in the bell-housings if it is not a removable bell-housing. If it is a 4L80E it does not look much different on the outside than most of GM's automatics, if it is the Allison the trans is large in comparison to any GM automatic and it will have Allison stamped in the side as well as an external spin on filter next to the pan at what would be the drivers side front corner if the trans was in the truck. These are the only two automatics GM used with the transfercase. Last edited by biggsteve97; 10-05-2011 at 03:13 PM.



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